Dump-body



Dec. 20, 1932. A. STARK 1,891,458

DUMP BODY Filed May 2, 1932 5 Sheets-Sheet l //Vl/E/V7'0/?.

ALEXIS STARK.

HIS ,qrfolwvfr Dec. 20, 1932 A. STARK 1,891 45s DUMP BODY Filed May 2,1932 5 Sheets-Sheet 2 A. STARK DUMP BODY Dec. 20, 1932.

a Sheets-Sheet 5 Filed May 2, 1932 lNVE/VTOI? ALEXIS ST 1975 47 TTOR Y'E21 Patented Dec. 20, 1932 UNITED STATES ALnxIs STARK, or SAN rnANcIsoo,CALIFORNIA DUMP-BODY Application filed May'2-, 1932. Serial No. 608,725.

My invention relates to improvements in dump-bodies for vehicles whereina pivotally mounted body has an inclined bottom to produce a greatercapacity upon one side of 1ts pivotal axis than the capacity upon .theopposite side thereof, said lesser capacity slde being weighted andheavier than the greater capacity side only. whensaid body is unloaded,said body operatingin con unct1on with a series of connected latchesarranged to engage said body and prevent movement there of from and toloading and dumping positions, whereby said body may be moved, whenloaded or unloaded, from, and to, said dumping and loadin positionsrespectively, by the attraction of gravity when said latches arereleased.

The primary object of the present lnvention is to providea new andimproved dumpbody. v V

Another object of the invention 1s to provide a new and improveddump-body having improved means for automatically moving said body toand from loading and dumping positions, as may be required.

A'furtherobject is to provides. new and improved device of the characterset forth having improved means for automatlcally moving a dump-bodyfrom'loading to dumping position and from dumping to loadlng osition. xA still further object is to provide new and improved means forretaining a dump-body in either loading or dumping position, and forreleasing said body from either position.

A still further object is to provide a single element, which, whenactuated, will release said body from either position.

A still further object is to provide a new and improved dump-body whichwill normally be pivotally supported in. an unbalanced state to movesaid body to a dumping position when loaded, and to move said body to aloading position when unloaded. I

I accomplish these. and other objects by means of the improved devicedisclosed in the drawings forming a part of the present application,wherein like characters of reference are used to designate similar partsthruout the specification and drawings, .and in which a Fig. 1 is apartly broken end elevation of my improved dumping-body mounted upon avehicle;

Fig. 2 is a side elevation thereof; and

Fig. 3 isa partly broken plan view of the for transportation.

Pivotally mounted upon the frame 2 is a body 3 having an inclined bottom4, which bottom 4 is inclined transversely thru the longitudinal axis ofthe pivotal support 6 of said body 3, as disclosed in Fig.1 of thedrawings, whereby the body 3 has a greater capacity upon one side of itspivotal support 6 than the capacity of said body 3 upon the oppositeside of said pivotal support 6, whereby said greater capacity side ofsaid .body 3, when loaded, will be actuated by the attraction ofgravityto move the said body 3 to a I dumping position in a mannerhereinafter more fully set forth.

The lesser capacity side of the body 3 is ,provided with a suitableweight 7, while a' Q sec'ond'weight 8 depends from the body 3 anddirectly under its pivotal support 6, the weight of said combinedweights and the weight of a load in the lesser capacity side of saidbody 3 being less than the weightof a load in the greater capacity sideof said body I 3 when said body 3 is loaded.

The side ofthe body 3 adjacent, or on, the reater capacity side is openand a door 9 is hingedly'suspended' from the body 3 and is actuated bythe attraction of gravity to close said side when the body 3 is in aloading position, and to normally open said side when said body 3 is ina dumping position, as disclosed in dotted lines in Fig. 1 of thedrawings.

Rotatably mounted within the frames 2 on each end of the vehicle 1 aretransverse shafts 11, each being provided with a series of latches 12,13 and 14, rigidly connected to their respective shafts 11, andengaging, respectively, stops 15 and 16, mounted upon the ends of thebody 3, and Catches 17 projecting from the bottom of the door 9, saidseries of latches 12, 13 and 14 being thus connected so that the body 3may be released from either dumping or loading position in a mannerhereinafter more fully set forth.

Each shaft 11 is provided with a depending lever or arm 18 to which areconnected rods 21 passing thru suitable supports 22. A spring 23 isinterposed upon each rod 21 and between said levers 18 and the supports22, as disclosed in Figs. 2 and 3 of the drawings.

Links 2% connect said rods 21 to opposite sides of the pivot 26 of anoperating or releasing lever 27 whereby one movement of said lever 27will actuate the shafts 11 and move all of the latches 12, 13 and 1%to'disen gage their respective stops 15 and 16 upon the body 3 and thecatches 17 of the swinging door 9, and against the tension of thesprings 23, which tension will tend to normally retain engagement of thelatches with their respective stops. 1 The body 3 is held in horizontalor loading position by means of asuitable longitudinally disposedsupport or angle iron 23 secured to the frames 2 and under the lessercapacity side of the body 3. v

In operation, when the body 3 is loaded, the greater capacity side,orthat side adja cent the open side or door 9, is the heavier.

When the operating lever 27 is moved to pull the rods 21 against thetension of the springs 23, the levers 18 partially rotate or oscillatethe shafts 11 and the latches 13 and 1 1 are disengaged from theirrespective stops 16 and catches 17 on opposite ends of the body 3,and'the attraction of gravity, acting upon the load of greater capacityon that side of said body 3, will lower the said body 3 to dumpingposition, as disclosed in dotted lines in Fig. 1 of the drawings, and,the

catches 17 being released, the door 9 will swing open by gravity and theload will slide from the inclined bottom 1 thru the open end of the body3 and be discharged.

\Vhen the body 3 moves to such position, the stops 15 on opposite endsof said body 3 will be moved into a position where they are readilyengaged by the latches 12, and said body will thus be held, or retained,in dumping position by said latches 12, so that any lodged or unloadedmatter may be liberated and removed, or permitted to slide down theinclined bottom 4.

After the load has been fully discharged or dumped, the operating'lever27 is again operated, which will oscillate the shafts 11, ashereinbefore described, against the tension of the springs 23, andrelease the latches 12 from engaging relation with their respectivestops 15, and, the now heavier side of lesser'ca- -1 of the drawings.

As the door 9 swings closed, the catches 17 thereon, being provided withbeveled ends 17 will move betweenthe'latches 14 and the ends of the body3 and move said latches 14 outwardly to permit the passage of saidcatches 17 beyond said latches 14: and thereby permit said latches 14 todrop back into securing position;

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is 1. A dump truck comprising a frame; a bodypivotally mounted upon the frame and movable upon its pivot from; and toloading and dumping positions, said body having an inclined bottom andopen on the side adj acent.

position when unloaded; a gate hingedly suspendedfrom said body to closethe open side thereof a series of connected latches mounted upon theframe and movable to engage said body and retain the same in a loadingor dumping position; means for normally moving said latches intoengaging relation with said body to prevent relative movement thereofwith said frame; and means for moving said latches to release said bodywhereby the same may be moved to and from dumping and loading positions.

2. A dump truck comprising a frame; a body pivotally mounted uponsaidframe and having a greater capacity upon one side of its pivotalaxis than the capacity upon the opposite side of said axis, said bodybeingv heavier upon its lesser capacity side and having an open sideupon its greater capacity side wherebysaid body may be moved to a uponits load, when loaded, and moved to a loading position by the attractionof gravity upon ts heav ier' and lesser capacity side, when unloaded bythe attraction of gravity; a series of connected latches movably mountedupon said framesome of said connected latches engaging said body ineither loading or dumping position to prevent relative movement of. saidbody with said frame; means for releasing said latches whereby said bodymay be moved to and from dumping and loading positions by the attractionof gravity; a door hingedly suspended from said body and'movable, by theattraction of gravity, to open said open side of said body when the sameis'in dumping position and to close said open side when said body is ina loading position; and catches upon said door for engaging the othersaid latches when said body is moved to loading position for preventingsaid door from being opened.

3. A dump truck comprising a frame; a body pivotally mounted upon saidframe and having a greater capacity upon one side of its pivotal axisthan the capacity upon the opposite side of said axis, said body beingheavier upon its lesser capacity side and having an open side upon itsgreater capacity side, whereby said body may be moved to a dumpingposition by the attraction of gravity upon its load, when loaded, andmoved to a loading position by the attraction of gravity upon itsheavier and lesser capacity side, when unloaded by the attraction ofgravity; a series of connected latches movably mounted upon said framesome of said connected latches engaging to engage said body in eitherloading or dumping position, to prevent relative movement of said bodywith said frame; means for releasing said latches whereby said body maybe moved to and from dumping and loading positions by the attraction ofgravity; a door hingedly suspended from said body and movable, by theattraction of gravity, to open said open side of said body when the sameis in dumping position, and to close said open side when said body is ina loading position; catches upon said door for engaging the otherlatches, when said body is moved to loading position, for preventingsaid door from being opened; and means for normally movingsaid latchesinto engaging relation with said body when in loading or dumpingpositions.

4. A dump truck comprising a frame; a body pivotally mounted upon saidframe and having a greater capacity upon one side of its pivotal axisthan the capacity upon the opposite side of said axis, said body beingheavier upon its lesser capacity side and having an open side upon itsgreater capacity side, whereby said body may be moved to a dumpingposition by the attraction'of gravity upon its load, when loaded, andmoved to a loading position by the attraction of gravity upon itsheavier and lesser capacity side, when unloaded by the attraction ofgravity; a series of connected latches movably mounted upon said framesome of said latches engaging said body in either loading or dumpingposition, to prevent relative movement of said body with said frame;means for releasing said latches whereby said body may be moved to andfrom dumping and loading positions by the attraction of gravity; a doorhingedly suspended from said body and movable, by the attraction ofgravity, to open said open side of said body when the same is in dumpingposition and to close said open side when said body is in a loadingposition; catches upon said door for engaging the other latches, whensaid body is moved to loading position, for preventing said door frombeing opened; means for normally moving said latches into engagingrelation with said body when in loading or dumping positions; and stopsmounted upon said body engaged by said latches to prevent movement ofsaid body relatively to said frame.

5. A dump truck comprising a frame; a body pivotally mounted upon saidframe and having a greater capacity upon one side of its pivotal axisthan the capacity upon the opposite side of said axis, said body beingheavier upon its lesser capacity side and having an open side upon itsgreater capacity side, whereby said body may be moved to a dumpingposition by the attraction of gravity upon'its load, when loaded, andmoved to g r a loading position by the attraction of gravity upon itsheavier and lesser capacity side, when unloaded by the attraction ofvgravity; a series of connected latches mounted upon said frame andmovable to engage said body in either loading or dumping position toprevent relative movement of said body with said frame; means forreleasing said latches whereby said body maybe moved to and from dumpingand loading positions by the attraction of gravity; and a weightdepending from said body at its pivotal point and extending transverselyfrom the bottom of said body, said weight being actuated by theattraction of gravity to return said body from dumping, to loading,position.

6. A dump truck comprising a frame; a body pivotally mounted upon saidframe and having a greater'capacity upon one side of its pivotal axisthan the capacity upon the opposite side of said axis, said body beingheavier upon its lesser capacity side and having an open side upon itsgreater capacity side whereby said body may be moved to a dumpingposition by the attraction of gravity upon its load, when loaded, andmoved to a loading position by the attraction of gravity upon itsheavier and lesser capacity side, when unloaded by the attraction ofgravity; a series of connected latches mounted upon said frame andmovable to engage said body in either loading or dumping position toprevent relative movement of said body with said frame; means forreleasing said latches whereby saidbody may be moved to and from dumpingand loading positions by the attraction of gravity; a weight dependingfrom said body at its pivotal point and extending transversely from thebottom of said body, said weight being actuated by the attraction ofgravity to return said body from dumping, to loading, position; and alongitudinally disposed support mounted upon said frame for supportingsaid body in a loading position.

In witness whereof, I have hereunto set my signature.

ALEXIS STARK.

